Restoring Nylon parts (like the card guides in a PDP-8a chassis)

[Mike Stein]

Interesting indeed; that explains why the two tiny nylon gears in almost every one of the small plotters based on the little Alps unit (Radio Shack, Commodore, Atari etc.) have split...

m

----- Original Message ----- 
From: "Chuck Guzis" <cclist at sydex.com>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
Sent: Monday, March 21, 2016 7:37 PM
Subject: Re: Restoring Nylon parts (like the card guides in a PDP-8a chassis)


> On 03/21/2016 04:25 PM, Jules Richardson wrote:
> 
>> Interesting... so boiling them can make them expand too much, leaving
>>  them for a few weeks will allow them to contract, but they
>> "remember" their manufactured size, such that a few weeks after they
>> they aren't trying to return to their shrunken, pre-boiled state?
> 
> Interesting.  If water evaporation accounts for the dimensional 
> instability, why not use something that doesn't evaporate quite as 
> easily?  Say, ethylene glycol or a silicon oil?
> 
> --Chuck
>